Low-pressure heating.



B. H. GOLD. LDW PRESSURE HEATING. APPLICATION FILED JULY 10,1906.

Patented May 18, 1909. 0 2 SHEETS-SHEET 1.

E. H. GOLD. LOW PRESSURE HEATING. APPLIGATIUN FILED JULY 10,1905.

Patented May 18, 1909.

2 SHEETS-SHEET 2.

citizen of the United States, ,residing PATENT OFFICE.

UNITED STATES EGBERT H. GOLD, OF OIIIOAGO, ILLINOIS.

Low-Pnassunn HEATING.

Specification of Letters Patent; y

Patented may 1s, isos:

nppuoauonmed my iq, nos. smal No. seam.

the supply, and prefera ly at a substantially uniform pressure; p

The o ject of'm present Invention is to provide a simple evice, whereby vcold axr and water of condensation may e readily 'forced out of the radiating pipes and the radiating pipes may be illed with a heating medium at substantially the supply pressure yandinaintained at such pressure until the room, car or other'apartment to be heated has been brought to a sufficiently high temperatura-whereupon the automatic controling system may be brought into Operation so as' to thereafter maintain the desired temperature in the apartment to be heated-by means of a heating medium at relatively low pressure within the radiating pipes.

More specifically my present invention is intended for use in connection with low pressure heating systems on railway ears, whereby when steam is first turned into: the car, a col anism, be'quickly l'heated by means ofy high p'ressure steam, the low pressure' controlling device being temporarily 'out of operation, whereupon the low pressure 'device may be put into .operation and the desired or attained tem erature may thereafter be main tained by t e operation of the lowl rassure device. It will be seen therefore, t at my present invention is tobe distinguished `from those interchangeable systems such as illustrated inv m eo-pending' ap lications No. 243,361 and o. 245,311,` whch are so constructed that the system may, vat will, be

converted into a low pressureg'or a-'high pressure system, the apparatus ,beingso constructed that the system will normally continue to operate, either as a hi4 h rassure or a-lovg, pressure system 4as des1rei,.wl1ereos my present invention 4relates to a simpler d car may, by a .very simple mech- Vcontro -whereby a low and comparatively uniform .-Whenever the pipe J 1s vapor at a sufficiently high temperature, the

mechanism for the purpose of produci temporarilya hi h pressure s stem, whi shal operate as a; ove indicate and while it ymight be possible 4to proportion and ada'pt m wli t might be an interchanpeableasystem, `operating continuously at.hi

mary purpose of my invention.

T es

present invention so asV tor constitute,

pressur'eor'at low pressure, asdesired, suc is not the prl-` e and-such other objects as may hereafter appear are attained b my invention, a convenient embodiment o which is shown in the accompanying drawings, in which- Figure 1 is a sectional view of a portion of atypical low-pressure heatingsystem. Fig. 2 is an enlar ed sectional view of the shutoff valve mec ianism. Fig. 3 is a rear elevation of Fig.. 1; and Fig. 4 1s a view, partly in section, on the line 4-4 of Fig. 3, looking in the direction indicated by the arrows.

Like letters of reference indicate the same partsin the several figures of the drawings.

Referrin by letterto the accompan ing' drawings, ing system, to which a eatin lsuch as steam, is supplied throng pipe B leading controlled' by` the valve D mounted.in an inlet chamber 4E fromewhich the heat medium flowsv through the port F, into' t e radiating pipes returning normally through thechamber the po'rt H, the outlet chainber I the disohae ipe J, diaphragmeham'- ber and ports tb the atmosphere, or to an suitable zone of lower temperature.

he valve D is adapted to be operated by means of a diaphragm M stem N and levers O and P, as shown inmy iPatent o.-771,62`8 such o eratiiig device constituting a typical ing devicefor a lowpressure'system,

medium, a supply pressure and temperature is maintained in the radiati a source of igh pressure.

Normally, when the system is in operation closed by the valve and the port H is 'o en as shown in Fig. 1, so that the steam or ot er heatin medium flows freely throu h the the pipe J 4andgliaphra In chamber ed withateam or 'diaphragm M will -be expanded, thereby liftindicates the ipes of a ra iatto an inlet port C,-Wh1bh Is pipes, which are supplied frm .as a low-pressure s' stem, the blow-olf Q is 10o,

'port" into the chamber I, thence t rou hthe diaphragm to remain' cold an ing the stem N, and operating the levers O and P to close or throttle the valve D. When, however, steam is first turned on for the purpose of heating a cold car, or other a artment, it may be that the heating meldium at the low temperature which is suflicient to expand the diaphragm M will not initially heat a cold car, or room with sufficient rapidity. Therefore, the handle S is raised to the position shown in Fig. 1, thereby operating the spindle T, upon which is mounted the valve-arm U carrying the valves R and V, so that the valve Vcloses the port H, thereby disconnecting the diahragm of the automatic lcontrol device ilom the kradiating system and (permitting contracted and the valve D lto remainwide open,

with the result that the heating medium at full trainipe pressure, or other high pressure, will the radiating pipes, forcing the cold air 'and .vater4 of condensation out throu h` the blow-off whenceit will esca e t rouh the cham er W and' ipe X.

nasmuc as it does not greaty matter whether the valves R and V are mounted togather, as shown, or separately, I have in the claims referred to this mechanism as means for normally closing the blow-oil' port and for temporarily cutting the automatic controlling' means out of epeiation intending thereby to cover an device performing the functions of valves and V, whether mounted to operate in unison or se arately.

I do not here claim broad y an apparatus whereby steam may be circu ated at atmospheric pressure or at a substantially higher pressure,` nor sbroadl an .ap aratus whereby this resultniay i f' openin or closing communication between t e'raiatsystem and the automaticinlet control-5 lxnglapparatus, but Ireserve the right to claim suc sub'ect-matter in m vcopending appli*- cations o. 245,311 vand 0. 314,698;

As soon as the ipes are Afilled with steam,

or other suitable eating medium, the 'inflow' at high pressure will be-much more ra id than the escape throu h the ct'nistiicted4 low-0E ,-.Which it will smaller minimum diameter thanthe mini'- mum diameter of the inlet port (3f-,and the pi es will continue to fill until the pressure Within the radiating system will be substantially the saine as that within the feed-pipe `B and will be maintained at such high pressure until the car, or other apartment, has been .brought to a sufficienti hightemperature,

whereupon, the handle being movedv to the position-shown in Fig. 2, the port H will be opened and the heating medium be forced into the outlet chamber I and thence until it comes in contact with the diaphragm M, whereupon the automatic, idw-pressure controlling device will come into'operation, the inflow ofthe heating medium to the radibe understood' must be of -sure within siid4 radiating system provide ating pipes will be throttled, and a Wide and free dischar e being opened b the opening of the port the pressure an tem erature within the radiating pipes will quic ly drop to the desired-low point. i

From the foregoing, it will be readilyunderstood that inasmuch as, when the automatic controlling system is in o eration, the radiating system will ordinari be in full communication with theatmosp ere or other zone of low pressure it be entirely prac,- tical, under such conditionato leave the blow-oilr Q open at all timeggbut, as Vshown in the drawin s, thevalve R/ ein'g pointed, and

the blow-o Q being made to flare outwardly from its narrowest point, which is reached -b the pointed or comcaLvalveR, the valve will serve, whenever .it is-closed, to automatically force out of theblow-ofrany dirt, bits of hose. or other obstruction which is'very likely to otherwise accumulate and-close such a restricted o ening as the blow-off Q. Furthermore, if, or any' reason, the discharge from the diaphragm chamber K shall be to a zone of lower ressure than that to which the blow-oil' pipedischarges, it, of course will be desirable tofclose the blow-off Q whenever the port H is opened.

I do'not claim broadly in this a plication the' combinations with t e other ements o the disclosedvsystem of any outlet discharge device constructed or controlled so as to permit the accumulation of pressure withinthe system,while at the same time giving avent for water of condensation for thesecombinations are covered broadl. vby V ap lications Serial Nos. l ,69S and 245,311.

claim: l y 4 1 The combination with a radiating system having a blow-oil port, of'means for silpplying a heating mediumthereto. at a r atively high pressure, means for automatically maintaining the heating medium within said the claims of my i radiating system at a relatively low pressure,

means for temporarily cutting said automatic controlling means out of operative contact with the radiating system, and for at the same time opening'the blow-oli port the saidl blow-.oli port being of such constrictedl arca with relation to the supplyport that the Apreswill rise, although said blow-nii` port remains open.

=matically maintaining the heating medium in said radiating system at a relatively low" :y closing said low-,off port, "and for tie'iitpiorarily',l J '13,04 z.,

pressure, means for normall `iaid automatic ycontro l means 2. The combination with a radiatingv 'system and said controlling o eration, and for opening saidblo'W-.oi port Wllienever said automatic device is so cut out of operation.

3. The combination with a radiating s steni provided with an inlet port and Wit a blow-0H port having a minimum diameter of much less area than that ofi the inlet port., means for su plying a heating medium to said system tlii'ough said inlet port at a relatively hi h pressure, means in communication wit said radiatin s stem for automatically maintaining t e eating mediuml ,in said system at a relatively low pressure,

means for cutting said automatic controllin means out of operative connection with sai radiating system while leavin a free vent through said blow-off, and ier automaticall clearing said blow-01T of obstructions at t e same time that said automatic con- 'trolling means is cut into operative connection with said radiating system.

5. The combination with a radiatin system provided with an inlet port an two outlet Orts, of means for supplying a heating me iiim to said radiatin system through said inlet port at a relative y high pressure, means for automatically maintaining the heating medium in said radiating system at a relatively low pressure, said controllin means being located in roximity to oneo saidloutlets and the ot er of said outlets bein of suchconstricted area with relation to t e inlet port that the pressure .Within said system will rise although said secondmentioned' outlet remains open, a valve to close said last-,named outlet, and a valve to shut ofi communication between said system and the automatic controllingr means and the first-mentioned outlet. i

6. The combination with a radiating system, of ,means for supplying a heatingl medium thereto at a` relatively high pressure,

for automatically maintaining the and arranged that means comprising `an inlet controlli device medium withinsaid radiating'system at a relatively low ressure,a discharge device the orifice of w ch is small relative to the, inlet to said system, so as to restrict the dis-l medium relative to its ,ch arge of thelheat' inflow, and means or temporarily cutting said inlet controllin device lout of operative' contact with the ra 'ating system and for at `the same time opening communication between the system and said discharge device,

system will. rise.

7. The combination vwith a radiating s s-` tem providedwith an inlet ort and provi ed aving an orifice with. a discharge device small relative to the inlet prt, so as to 'reeating 4-so that the pressure within said radiating' strict the 'discharge o f the heating medium relative to its inflow, of means for supplying a heating medium to'said radiating system through said inlet port at a relatively high pressure, means for automatically maintainin the heating mediumin said system at a re atively 'low pressure, means for shutting off said' discharge device, forv temporarily cutting said automatic controlling means f out of operation, and for putting the system in `communication with said discharge deout of operation.

' vice whenever the automaticdevice is so cut 8. The combination with-a radiatings s` Vtem provided with an inlet port and wit a discharge Adevice, having an .orilice Vsmall relative to the inlet port, so as to restrict the. discharge of heating medium relative to its inflow, means for suplpll'yin a heati dium to said system t ougi said inle port vrneat a relatively high rassure, means in communication with said radiating system for automatically maintaining the heating mea valve mechanism for shutting ofi said discharge device so constructed andiarranged that said valve mechanism may be operated to close communication between said radiating system and said controlling device and fat the saine time'to put the system in communication with the discharge device, and vice versa.

EGBERT I-I. GOLD.

Witnesses:

`O`. R. BARNETT,

G. Y. DANKWARD.

-dium thereinV at a relatively low pressure, and 

